Wire-stretcher.



W. A. CAMPBELL.

WIRE STRETCHER.

APPucuroN men FEB-2|. 191,8.

Patented July 23, 1918.

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UNITED STATES PATENT OFFICE.

WILBER ALLEN CAMPBELL, OF FLORA, ILLINOIS.

WIRE-STBETCHER.

Application filed Fe brnary 21, 1918.

To all whom it may concern:

Be it known that T, VILBER ALLEN CAMP- BELL, a citizen of the UnitedStates, and a resident of Flora, in the county of Clay and State ofIllinois, have invented certain new and useful Improvements in ire-Stretchers, of which the following is a specification.

My invention is an improvement in wire stretchers, and has for itsobject to provide a device of the character specified for erecting andstretching woven wire and single strand fence wire with ease andrapidity, and wherein a series of grips is provided for engaging thewire, together with means for simultaneously making tension on the gripsto tighten the wire.

In the drawings:

Figure 1 is a front view of the device in use;

Figs. 2 and 4 are sections on the lines 2-2 and t d, respectively, ofFig. 1;

Fig. 3 is a front view of the handled nut;

Fig. 5 is a perspective view of the sleeve.

In the present embodiment of the invention, a series of grips isprovided. each consisting of a pair of crossed members 1 and 2 pivotallyconnected, as indicated at 3, and having looped handles 4 which areconnected by a flexible member 5, as, for instance, a chain, to astretcher bar 6. The arrangement of the handles is such that the greaterthe pull upon the handles the tighter the gripping jaws will be clampedupon the wire.

The stretcher bar 6 has an opening at each grip, and the chain 5 of eachgrip engages the adjacent opening. The end opening and the centralopening of the stretcher bar have flexible members 7 and 8 connectedtherewith, and these flexible members at the ends remote from thestretcher bar are connected to a common ring 9. To this ring isconnected a draw screw 10, by means of a hook 11 at one end of thescrew. This screw. as shown in. Figs. 1 and 2. is composed of four barsarranged in spaced parallel relation, the outer faces of the bars beingthreaded,

Specification of Letters Patent.

Patented July 23, 1918.

Serial No. 218,496.

and the screw is passed through a guide sleeve 12 which has a squarebore, and grooves 13 in the faces of the bore for receiving theindividual bars of the screw. Thus while the screw can movelongitudinally of the guide sleeve it cannot rotate with respect to thesleeve. I

The guide sleeve has a radial arm 14 at one end, and a chain 15 isconnected with the other end of the sleeve. being connected to aperforated lug 16 on the sleeve. The arm Isl has a notch. as shown. forengagement by the chain to secure the guide sleeve to a post 17 or otherfixed support. A nut 18 is threaded on to the draw screw at the end ofthe sleeve remote from the book 11, and this nut has oppositelyextending han dle members 19 for convenience in turning the same.

Referring to Figs. 1 and 4, it will be no ticed that the gripping facesof the jaws 1 and 2 are corrugated, and that the jaw 1 fits within thejaw 2. the jaw 2 beingchannel shaped to receive the jaw 1. \Vith thisarrangement there is no possibility of the wire 20 becoming disengagedfrom the jaws.

It will be noticed that each wire grip is provided at the top with acutting device for cutting wire. The handles of the handled nut aretubular or hollow, for the purpose of permitting engagement by a lever.

I claim:

In a device of the character specified, a draw screw and a guide sleevefor the screw having means for connecting the sleeve to a post or otherfixed support, said draw screw consisting of four sections arrangedabout a common axis and externally threaded and connected at their endsto each other, the siceve having grooves for receiving the sections, anda handled nut threaded on to one end of the draw screw. the other endhavin means for engaging the objects to be move W ILBER ALLEN CAMPBELL.

Witnesses C. E. HEMPHILL, R. M. SINHAM.

Copies of this patent may be obtained or five cents each, by addressingthe Commissioner of Patentn, Washington, D. 0.

